.video-box{
    background-color: black;
    color: white;
    font-size: 60px;
    justify-content: flex-end;
    .video{
        width: 100%;
    }
    .course-introduce{
       height: 33%;
       justify-content: flex-end;
       text-indent: 10px;
       margin-bottom: 20px;
        .course-chapter{
            letter-spacing: 10px;
        }
        .course-text{
            padding-top: 10px;
            font-size: 20px;
        }
    }
}
.footer{
    .progress{
        width: 0;
        height: 90px;
        background-color: pink;
    }
    .control{
        bottom: 0;
        left: 0;
        width: 100%;
        height: 90px;
        align-items: center;
        justify-content: space-around;
        .iconfont{
            font-size: 50px;
            width: 80px;
            text-align: center;
        }
    }
   
}


// 蒙层
.mantle{
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(66,136,255, .9);
    h4{
        color: white;
        text-align: center;
        padding-top: 20px;
    }
    .all-btns{
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%,-50%);
        color: white;
        justify-content: space-around;
        flex-wrap: wrap;
        .btn{
            width: 100px;
            height: 100px;
            border-radius: 50%;
            line-height: 30px;
            text-align: center;
            .iconfont{
                margin-top: 25px;
                font-size: 36px;
            }
        }
        .continue-btn{
            background-color: rgb(45, 217, 60);
        }
        .end-btn{
            background-color: rgb(204, 28, 28);
        }
        .curr-course{
            width: 300px;
            height: 100px;
            margin-top: 30px;
            border: 1px solid white;
            img{
                height: 100%;
                width: 50%;
            }
            .text{
                text-align: center;
                line-height: 30px;
                padding-top: 30px;
                padding-right: 45px;
            }
        }
    }
}
